Well-drilling machine derrick



July 8, 1930. H. G. PARR WELL DRILLING MACHINE DERRICK 2 Sheets-Shet 1 Filed April 1, 1927 Jill s, 1930. H, G, PAR 1,770,286

WELL DRILLING MACHINE DERRICK Fil ed April 1. 1927 2 She ets-Sheat 2 fi nmmmmmvxttfiQl i t HARRIS GPARR- Patented July 8, 1930 7 I HARRIS e; Page, on Form: woncrn," 1 mins, ss e-ivon :ro roar? won'r r m:

CHINERY &- snrrrv COMPANY, roar won'rn; rnxA-s; aooaronarron OFgTEIQA r wELn-nRI LLI G-MAonm DERRICK -Ap plicatipn filed April 1,

My -invention relatesto well machinef derf ricks ormasts and moreparticularly to. m ans. g 1 for'pivotally connecting-thederrickfto the basestructure of themachine and, to bear- .giilg s for the .vvorkend of the derrick; and the object is to prolong .Ithe' lli-fe, of derricks; v V by preventing their deterioration by. Ywearfof} the derricks at their points of; connection with the supporting; structure and for preventing deterioration 'ofthe parts iofthe derrick aboutflthe shaftsat thefwork end; of the derricks. Heretofore the derricks have been quickly worn ont or destroyedby reason of; thepivot bolts or shafts which were inserted or rnn thronghthederricks near their ends. The object of this invention is to rovide means 'for" relieving the) derricksaof the -direct straincaused by the pivotal connection of thejshaft running- -throug h (the derrickw members Another object istoipositionthe main sheave wheel substantially in, the cen tral part-of the derrick members atthe work end of the-derrick and to avoid projectii-ig partson the sides of the; derrick whichmight.

be pulled or torn orbrokenofi and dropped on the Operators below. Otherfobjectsl and advantages willbe fully explained in the following descriptionand the invention will be more particularly pointed, out in the.- claimsf Reference is had; to the accompanying, drawings whichform a part; of this application.

Fig.1 is. a perspective view of a derrick and suflicient parts of a well machine to show the, application of the improvements.

Fig; 2, is a broken perspective View, show.- inghow'the derrick rests on the pivotalsup ports whenthe derrick is brought, to inoperative, position. e

Fig. 3 isadetailviewof a-bearing.

I Fig. l is a side elevation of the uppfer end ofthe derrick, I r

Fig. 5 is a rear elevation of thesame, I v

Fig, 6isa perspective View of; one ofthe work: end bearings. H j I Figs 7 is a detail sectionalf. view, taken subtantially onthe line'7, 7-,of ;F ig. 4. V j Fig. Sisa vertical section of one of the bearingsat the upperendof thejderrick.

' Fig; 'isaperspective viewf na i he 1927. Serial No. 180,268.,

beat s derrlck.

thederrick.

'for the sandlinesheave wheel shaft; 3

manner.- flubricat ng the; sheave Wh el,

1 Fig. flO isla plarifview'jdt thegwork t iig;gr., j

Fig. 1251s afside elevationjofgthe same, showing theoil rservoir'indotted outline 1 Fig." 13 is a'detail view-of the, sh'aftgfor, the, casing line-.Jsheave: wheel, showing the.

' Similar characterslof referelnCeare nsed to indicate the same; parts. 'throughout the several views.

. The drawingsshowparts awheeledwellg drilling inachine. the wheels; beingv omitted; v The drawings show an axle;v 1,, longitildinal sills :2" and a cross-beam 3 to :whi chtheaxle- 1' is attached. The machine ,i S p iovided.,with derrick supports or posted- The derrick rickemeinbers (i and made securely rigid llllelia rick me'rribersfi are not engaged by'the-piwot. shaft 7 as. heretofore. Bearings Sifor the herein; shown is not connected, directly... to the-supports 4- Bearingm mbersb. areat tached throughout 'their lengths to theder- 'piS Zotsllaftsl are; attached tothe bearing members v5,- and engage and-tnrn on the shaft 7. This structuremakesthe pivotal connectionv of the. derricklwithz the well machine and; the braces: 6'5 and 5 bearing] members. 5:

Str ng hen he er d makeh e r ek secure against creening or lateral motion.

The derrick 5 supports: 4 aren ade; rigid with} the machine j frame braci-ng memberjs; in; cluding a "crossbar: 9; which is! attached to. 1 the su-pportsandiby the-braces 10, which-are attached to the, cross bar 9 and tothe; longi tudinalsillsQ, the supports tbeing attached tothe sills 2-by bolts 11; Ill order.- to plfivent spreading of the 'supports l in the operation of the machine bearin s13 are providedfor the endshof-the; shaft; r and attached to .the supports-4 and,'bo lts"12 are rnn through the a ings fi, th nghihe h ft 7, .a d.= hr gh the supports 4. The derrick can be swung freely on the shaft by reason of the bearings 8 which turn on the shaft 7 There is an advantage in tying the supports 4 against spreading by the means shown because there are no parts'of the shaft orbearings proj ecting laterally beyond the supports 4 which would interfere with the walking or spudding beams (not shown), The derrick members 6 are generally made of wood and are of'great length. The advantage of this invention is that the derrick members are made rigid and are not weakened by making holes through them and the strain isdistributed by the bearing members 5 and the braces6. The

bearing members 5 are not weakened by holes throughthem as the bearings 8 engage the pivot shaft 7' and are attached to the bearing proved and strengthened. Longitudinally extending bearing bars are attached to the sides of the derrick members 6 for accomplishing three functions. They strengthen the upper ends of the derrick members, make separate"bearings-supports to take strain and wear off, the upper endsof the derrick members, and provide means for preventing the drilling cable from jumping or being thrown from the sheave wheel 16. "The upper ends of the derrick members 6 are cut away for insertion of'the bearings 17. The bearings' 17 and 18 are thus countersunk in the derrick members "6 and also in the bearing bars 15. The bars 15 extend below the cutaway portions of'the derrick members 6 and are attached thereto by suitable bolts. It will be understood that both derrick members 6 are provided with such bearing equip ment. The bearings-17 and 18 have angular webs 0r flanges 20'by which the bearings are attached together with suitable bolts, which bolts extend down through bracing bars 15 and 'the vertical portions of theffianges on member 17 bear against the outsides of the bars 15. The member 17 of the bearings has a stud or lug 19 which projects down into the derrick member 6 as shown in Fig. 7. In this manner the bearings 17 and 18 are fixed against movement on the bars 15. The bearings 18 are provided with oil reservoirs 21 and the reservoirs 21' have openings 22 by whichthe lubricant or oil is supplied to the reservoirs. The lubricant escapes from the reservoirs 21 to the shaft through apertures 23. One advantage of" the construction of the reservoirs 21 is that the reservoirsare formed in a single piece, the cap being formed integral therewith. There is nothing to be displaced as where the caps are made in separate pieces and secured to the reservoirs. The bearings and their connections take the direct strain from the'd'errick members 6 and there can be no'wear of the derrick members. The

outer ends of the shaft of wheel 16 are flush with the outside of the bearings 17 and 18. Thederrick is provided with means for pre venting the spreading of the members of the derrick. A block 33 is mounted between the derrick members 6 and metal bars 34 are mounted on the outsides of the members 6 and the bars 34 are secured by bolts and nuts which project throughthe' bars 3a and the derrick members 6 and the block 83.

For similar reasons just stated above, im-.

proved bearings are provided for the shaft of the sand line wheel 24. Bearings 25 are at: tachedto the derrick members 6,being part- 1y countersunk therein and provided with flanges 26 for attaching the bearings'to the derrick. The bearings 25 are provided with lubricant reservoirs 27, indicated by the dotted outline in Fig. 12, and provided with inlet opening 28. The construction and arrangement of the-bearings 22 are such that the ends of the shaft ofthe wheel 24 are substantially flush with the sides of the derrick members 6. V

The derrick carries a sheave wheel 29 of the. casing line pulley. Improved means are provided for oil or lubricating material for the shaft of wheel 29. Fig. 13 illustrates the lubricating means. The shaft 30 is provided with'a duct 31'whioh leads from a fillin nozzle 32 and the duct extends substantially to the central parts of the wheel 29 for supplying lubrication to the wheel.

What I claim, is :p v

1. In a well drilling machine provided with a derrick; means for preventing the spreading of the base end of said derrick consisting of a non-rotatable shaft, bearings attached to said derrick and engaging said shaft, bearing supports for said shaft, bearings attached to said supports and engaging said shaft, andbolts projected through said supports and the bearings attached thereto and through said shaft, a sheave wheel for a drilling cable, a pair of bearings and a shaft for said wheel journaled in said bearings, each bearing having a depending lug bearing against the outside of the derrick for preventing the spreading of the parts of the derrick and each bearing beingpartly embedded in said derrick.

2. In a well drilling machine provided with a derrick pivotally connected thereto; a sheave wheel for thework end of said derrick, bearing bars attached to the sides of said derrick at the work end, and means for mounting and-centering said wheel in the work end of said derrick consisting of a shaft and bearings for the endsof'said shaft 39111. I

naled in'said bearing bars, said bearings being partly embedded in said'derrick and partly embedded in said bearing bars,and .7

lugs depending fromsaid bearings bearing against theontside of said derrick, a'nd each V bearing being provided with a lubricating f reservoir for lubricating said shaft, and each reservoir being provided with a cap.

3. In a well drilling machine provided r with a derrick intwo parts pivotallycon-' vnected tojsaid well drilling machine; sheave; Wheels for the work end of said'derrickan'd shafts therefor, bearings for said shafts em bedded in said derrick, and means for lubricating said shafts,- the ends ofsaid shafts and said bearings being substantially flush with the outsides of sa'idderrick.

4. In a well drilling machine provided with a derrick .in two parts pivotally connectedthereto; sheave wheels for the work end of said derrick and shafts therefor, bearings, for said shafts embedded in said derrick,'n1eansf0r lubricating said shafts, the 7 ends of said shafts and the bearings therefor being approximately flush with the outsides'of said derrick, and reservoirs for the v bearings of the cable line sheave wheel provided with caps integraletherewith;

In testimony,I set my hand,'this 24th day j ofDecember, 1928. v V

HARRIS GREGORY PARK. 

